Fig. 2From: Preparation of SnIn4S8/TiO2 Nanotube Photoanode and Its Photocathodic Protection for Q235 Carbon Steel Under Visible Lighta Topographic and b cross-sectional SEM images of the TiO2 NT films, c topographic and d cross-sectional SEM images of the SnIn4S8/TiO2 composite filmBack to article page